Choreo step sequence is the SECOND step sequence in a junior/senior men's long program. The first one is the leveled scoring program, the second one is the choreo step sequence. The spiral sequence is being replaced with the choreo spiral sequence for Senior ladies long program.

The choreo step sequence and choreo spiral sequence both have a base value of 2.0, but can end up higher or lower after GOE. For programs with only one step sequence (ladies, etc.), a level is given for the step sequence. There are no more levels on spiral sequences, period.

ISU Communication 1611. This is subject to approval from the ISU congress, of course.

FYI, you will find that communication here: http://www.isu.org/vsite/vnavsite/pa...v-list,00.html
I think the ISU Congress is June 14-18, so it won't be official until then.
Since one spiral for 6 seconds counts, I would imagine there is no requirement to change legs.